cache unread messages longer
round table user icon margin
add ui/build script
el "Ελληνικά" translation #11287. Author: kosf.
ar "العربية" translation #11289. Author: Abd0.
uk "українська" translation #11290. Author: Gatsik.
nb "Norsk bokmål" translation #11292. Author: XPJ-v134.
new icons
fix ui buttons
Merge branch 'master' into antichess

* master:
  fix ui buttons
  new icons
  nb "Norsk bokmål" translation #11292. Author: XPJ-v134.
  uk "українська" translation #11290. Author: Gatsik.
  ar "العربية" translation #11289. Author: Abd0.
  el "Ελληνικά" translation #11287. Author: kosf.
  add ui/build script
  round table user icon margin
  cache unread messages longer

Conflicts:
	public/font26/fonts/lichess.eot
	public/font26/fonts/lichess.svg
	public/font26/fonts/lichess.ttf
	public/font26/icons-reference.html
	public/font26/styles.css
	public/font27/fonts/lichess.eot
	public/font27/fonts/lichess.svg
	public/font27/fonts/lichess.ttf
	public/font27/icons-reference.html
	public/font27/styles.css
	public/font28/fonts/lichess.eot
	public/font28/fonts/lichess.svg
	public/font28/fonts/lichess.ttf
	public/font28/icons-reference.html
	public/font28/styles.css
	public/stylesheets/common.css